Which one is not a polynomial? Select one: A. 20 B. x2 C. x-2 + 4x3 D. (x - 2)2 What is the degree of -13x3 + 2x2 - 8x - 6? Select one: A. 13 B. 3 C. 2 D. 1 Compute (2x2 - 6x + 7) + (3x3 - 3x). Select one: A. 5x5 - 9x + 7 B. 5x2 - 3x + 7 C. 6x3 - 6x + 7 D. 3x3 + 2x2 - 9x + 7 Compute (12x3 - x2 - x + 4/3) + (x3 + x2 + x - 1/3). Select one: A. 11x3 - 2x2 - 2x + 5/3 B. 13x3 - x2 + x - 1/3 C. 13x3 - x2 + 2x + 1 D. 13x3 + 1 Compute (12x3 - x2 - x + 4/3) - (x3 + x2 + x - 1/3). Select one: A. 11x3 - 2x2 - 2x + 5/3 B. 13x3 - x2 + x - 1/3 C. 13x3 - x2 + 2x + 1 D. 13x3 + 1 Compute -32(-2)3. Select one: A. -72 B. 72 C. -36 D. 36 Compute (-4y2)3. Select one: A. -4y5 B. -4y6 C. -64y6 D. 64y6 Compute (-5x4)(4x5) Select one: A. -20x9 B. -20x20 C. -9x9 D. -x9 Compute 5x3(6x2 - 2x + 3). Select one: A. 11x3 - 7x + 8 B. 30x3 -10x2 + 15 C. 30x5 -10x4 + 15x3 D. 30x6 -10x5 + 15x4 Compute (x + 3)(x + 4). Select one: A. x2 + 12x + 7 B. 2x2 + 12x + 7 C. x2 + 7x + 12 D. 2x2 + 7x + 12 Compute (x + 3)(x - 4). Select one: A. x2 + 7x - 12 B. x2 + 7x + 12 C. x2 + x - 12 D. x2 - x - 12 Compute (x2 + 4)(x2 - 4). Select one: A. x4 + 16 B. x4 - 16 C. x4 + 8x2 - 16 D. x4 - 8x2 + 16 Compute [(1/4)x + 4][(3/4)x - 1]. Select one: A. (3/4)x2 + x + 4 B. (3/16)x2 - x + 4 C. (3/16)x2 + (11/4)x - 4 D. x2 + x - 4 Compute (5x + 4)2. Select one: A. 25x2 + 16 B. 10x2 + 20x + 16 C. 10x2 + 40x + 16 D. 25x2 + 40x + 16 Compute (x - 2)2(x + 2)2. Select one: A. x4 -16x2 - 16 B. x4 -8x2 + 16 C. x4 -16x2 - 32 D. x4 -4x2 + 16